HP StorageWorks 2.140 Director Switch - Manual (Page 120)

Configuring the director 120
Click Activate to display the 10-100Km confirmation dialog box.
NOTE: If a switch supports BB credits by port, an RX BB Credits column replaces the 10-100Km
column.
• RX BB Credit—Minimum and maximum allowable port BB credit values vary by switch. If an
invalid value is entered, an Invalid RX BB Credit error message is displayed. The BB credit value
cannot be changed unless the port is off line. The BB Credit value is validated as entered. Click
Activate to display the RX-BB Credit Confirmation box.
In addition to the maximum BB credit limit per port, the total BB credits allocated to all ports
cannot exceed the buffer pool size.
NOTE: Only 24-Port switches have a switch-wide buffer pool. The Configure Ports dialog box
displays the total and available buffers at the bottom of the dialog box. When information is
changed in the RX BB Credit column, this information also updates. If information is entered that
exceeds the buffer pool and Activate is clicked, an error message is displayed. Also, ports for the
24-Port switches can be individually configured between 2-12, with a total number of port credits of
150.
Right-clicking in the RX-BB Credit column displays a RX BB Credits dialog box.
• For switches without buffer pools, this dialog box allows you to Set all, which sets all ports
to a single value or Set all to maximum which set all ports to a maximum BB
10km-100km credit value.
• For switches with buffer pools, this dialog box allows you to Set all, which sets all ports to a
single value or to Distribute which distributes the pool buffers among all ports evenly.
Clicking OK changes the values in the Configure Port dialog box. Clicking Activate changes
the values on the switch.
Clicking Set all displays the Set All RX BB Credits dialog box. Entering a value for RX BB Credit
and clicking OK propagates the value to all ports on the Configure Ports dialog box. If an
invalid value is entered, a message dialog box is displayed.
• LIN Alerts—A link incident (LIN) is a problem detected on a fiber optic link, such as the loss of
light or invalid sequences. When a problem occurs, a LIN alert is sent to the Link Incident Log in
the switch Element Manager. LIN alerts warn you that there is a link incident being detected
through a port connection.
A link incident causes a yellow attention indicator (triangle) to display for the port in the
Hardware view and in the alert column of the Port List view. Once a LIN occurs, you can
acknowledge it by clicking the Clear Link Incident Alert option from the right-click menu for
the port (Hardware view). A description of the alert is displayed in the Link Incident box of
the Port Properties dialog box (see Figure 22 on page 63).
Place or remove check marks in the check boxes in this column to enable or disable link incident
alerts. The factory default is to enable LIN alerts.